C.I. acid red 249 and C.I. acid yellow 117 and auxiliary reagent ammonium sulfate were purchased from Tianjin Zhongxing Fine Chemical Industry Co. Ltd. Acetic acid, hydrochloric acid, sodium carbonate, sodium hydroxide for pH adjustment, aluminum potassium sulfate (KAl(SO4)212H2O) and ferrous sulphate (FeSO47H2O) as mordants were all AR grades and were produced by Shanghai Chemical Agent Ltd. These two mordants are generally used in dyeing process of natural dye and both are benign to human health and the environment Magic Amah laundry detergent was produced by Magic Amah